> Does anyone have a great idea how to diddle the parameters before install so I
> can see what I'm doing? I want to install on spare disk and share the /home and
> /appdata between FC9 and FC10, at least for the moment.
I don't know if it is a great idea, but if you have a network connection and
another computer, you might be able to install via a vnc session or you could
just install in text mode.
See http://fedoraproject.org/wiki/Anaconda/Options for all the wondrous
options you can give the installer.